EP1409062A1 - Appareil d'insertion de fil-guide pour catheter - Google Patents

Appareil d'insertion de fil-guide pour catheter

Info

Publication number
EP1409062A1
EP1409062A1 EP02738938A EP02738938A EP1409062A1 EP 1409062 A1 EP1409062 A1 EP 1409062A1 EP 02738938 A EP02738938 A EP 02738938A EP 02738938 A EP02738938 A EP 02738938A EP 1409062 A1 EP1409062 A1 EP 1409062A1
Authority
EP
European Patent Office
Prior art keywords
needle
guide wire
check valve
insertion device
wire insertion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02738938A
Other languages
German (de)
English (en)
Other versions
EP1409062A4 (fr
Inventor
Gil-Whan Lee
Seung-Taek Oh
Chung-Su Samsung Medical Center KIM
Ki-Jun Medical College KIM
Kyung Dept. of Thoracic Cardiovascul Surgery SUN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sewoon Medical Co Ltd
Original Assignee
Sewoon Medical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sewoon Medical Co Ltd filed Critical Sewoon Medical Co Ltd
Publication of EP1409062A1 publication Critical patent/EP1409062A1/fr
Publication of EP1409062A4 publication Critical patent/EP1409062A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09—Guide wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09—Guide wires
    • A61M25/09041—Mechanisms for insertion of guide wires

Definitions

  • the present invention relates to a guide wire insertion device for a catheter and, more particularly, to a guide wire insertion device having a check valve, for preventing blood from being gush out through a needle inserted in the body.
  • a medical catheter is a hollow tube for insertion into a body cavity for diagnostic purposes, medicine injection or distending a contracted passageway or treatment purposes including fluid infusion, drug injection, and dilation of steno tic tracts.
  • a catheter is used to treat diseases relating to a variety of internal organs such as heart, duodenum and the like.
  • catheter is used to treat disease of a blood vessel such as artery and vein.
  • the catheter can be inserted into the body either by a surgical cut down technique or by the Seldinger technique.
  • a catheter can be inserted less invasively by using a guide wire.
  • FIGS. 1 (a) and 1 (b) show a process for inserting the catheter into the human body.
  • a guide wire insertion device for the catheter is first assembled. That is, a syringe 2 is mounted on a rear end of a needle portion 1 .
  • a piston 7 of the syringe 2 is in a state pulled rearward, an internal pressure of the syringe 2 becomes lower than the atmosphere pressure.
  • an operator inserts 'the guide wire insertion device for a catheter' into the human body so that the needle 4 can be advanced into a blood vessel.
  • the operator can confirm the accurate insertion position of the needle by observing the blood flowing into the syringe 2.
  • the syringe 2 After identifying the blood flowing into the syringe 2, the syringe 2 is separated from the rear end of the needle 1 to insert the guide wire 6. At this point, the blood in the needle portion 1 is gushed out.
  • the administrator blocks the rear end of the needle portion 1 using his/her finger to prevent the gush out of the blood.
  • the administrator prepares a guide wire 6 and removes the finger from the rear end 3 of the needle portion 1 , after which the guide wire 6 is inserted in the blood vessel through a hollow hole 8 of the needle portion 1 , and the guide wire 6 is placed into the desired portion of the blood vessel.
  • the blood may be gushed out through the needle portion even during the process for inserting the guide wire.
  • one system allows a guide wire to be inserted through the rear end of the syringe without separation from the needle.
  • it is sometimes difficult for an operator to handle because its wide range of hand motion and long working distance.
  • the present invention has been made in an effort to solve the above-described problems. It is an objective of the present invention to provide a guide wire insertion device for a catheter, which can prevent blood from being gush out when a needle is inserted into a blood vessel, thereby sanitarily inserting the guide wire into the blood vessel.
  • the present invention provides a guide wire insertion device for a catheter, comprising a needle portion provided with a hollow portion, the needle portion having a needle mounted on a front end; valve means mounted in the hollow portion of the needle portion to control flow of blood; a cap portion mounted on a rear end of the hollow portion of the needle portion to fix the valve means in the needle portion; and a syringe for absorbing the blood through the needle portion by penetrating the valve means.
  • the valve means comprises a check valve for controlling the flow of the blood, a rod portion mounted on a rear portion of the check valve to open/close the check valve, and a spring for biasing the rod rearward to prevent the check valve from being opened when the syringe is removed by pushing the rod portion rearward.
  • the check valve comprises a circular flange having a central circular hole and a hemispherical portion projected from a surface of the circular flange and facing the needle, the hemispherical portion being provided at its top with a cut-away portion and a hollow portion communicating with the circular hole of the circular flange.
  • the check valve is designed such that the cut-away portion is elastically closed by self-elastic force.
  • the rod portion is formed in a hollow tube, one end of the rod portion has a diameter less than that of the circular hole such that the one end can be advanced into the hemispherical portion through the circular hole, wherein when the syringe is pushed forward, a front end of the syringe pushes the rod portion forward to open the cut-away portion.
  • One end of the spring is supported on the circular flange of the check valve and the other end of the spring is supported on a middle step formed on a middle portion of the rod portion.
  • FIGS. 1 (a) and 1 (b) are views illustrating a method for inserting a guide wire into a blood vessel using a conventional guide wire insertion device for a catheter;
  • FIG. 2 is an exploded perspective view of a guide wire insertion device for a catheter according to a preferred embodiment of the present invention
  • FIG. 3 is a sectional view of a guide wire insertion device depicted in FIG. 2;
  • FIG. 4 is an exploded perspective view illustrating an internal structure of a guide wire insertion device depicted in FIG. 2;
  • FIG. 5 is a perspective view of a cut-away portion formed in front of a valve depicted in FIG. 4;
  • FIGS. 6(a) and 6(b) are views illustrating a method for inserting a guide wire into a blood vessel using a guide wire insertion device for a catheter according to a preferred embodiment of the present invention..
  • FIG. 2 shows an exploded perspective view of a guide wire insertion device for a catheter according to a preferred embodiment of the present invention
  • FIG. 3 is a sectional view of a guide wire insertion device depicted in FIG. 2
  • FIG. 4 is an exploded perspective view illustrating an internal structure of a guide wire insertion device depicted in FIG. 2.
  • the inventive guide wire insertion device of a catheter comprises a needle portion 10 having a needle1 6 to be inserted into a human body and a syringe 1 1 , through which blood flows in, coupled to the needle portion 10.
  • the needle portion 10 comprises a hollow body 15, front end of which the needle 1 6 is coupled, valve means 50 disposed in a hollow portion of the hollow body 15 to check the flow of the blood, and a cap portion 20, in which the syringe 1 1 is inserted, the cap being integrally mounted on a rear end of the hollow body 15.
  • valve means 50 prevents the blood flowed into the body through the needle 16 from being flowing backward.
  • the blood flowed into the body flows into the syringe 11 only when the front end of the syringe 1 1 penetrates the valve means 50.
  • the hollow portion 12 of the body 15 comprises a front portion 13 through which the blood flows in, and a rear portion 14 having an inner diameter larger than that D of the front portion.
  • the inner diameter D of the front portion is designed such that the guide wire 45 can pass therethrough.
  • the needle 16 has an inner diameter designed such that the guide wire can also pass therethrough.
  • the valve means 50 is provided in the rear portion 14.
  • the valve means 50 comprises a check valve 1 7 for controlling the flow of the blood, a rod portion mounted on a rear portion of the check valve 17 to open/close the check valve 1 7, and a spring 1 9 for biasing the rod rearward to prevent the check valve 17 from being opened.
  • the check valve 1 7 is formed of a synthetic resin having a proper elasticity and disposed in the rear portion 1 4.
  • the check valve 1 7 has a circular flange 25 provided at its center portion with a circular hole 26 and hooked on a first hook portion 21 formed on the rear portion 1 4 and a hemispherical portion 27 projected from a surface of the circular flange 25 and facing the needle 1 6.
  • the hemispherical portion 27 is provided with a space communicating with the circular hole 26 of the flange 25.
  • the hemispherical portion 27 is further provided at its top with a cut-away portion 28 having a predetermined length.
  • the cut-away portion 28 is closed by the check valve 1 7 formed of the elastic synthetic resin as far as outer force is not applied.
  • the cut-away portion 28 is opened by being widened when the rod portion 1 8 pushes the cut-way portion 28. Therefore, when the blood flowed through the needle 1 6 flows into the check valve 1 7 through the cut-away portion 28.
  • the cut- way portion may be formed in a straight line-shape or a Y-shape.
  • the rod portion 1 8 is formed of a tube provided with a hollow portion 30 and reciprocally mounted in the rear portion 14 of the body 1 5.
  • One end portion 31 of the rod portion 1 8 has a diameter less than that of the circular hole 26 such that it can be located in the hemispherical portion 27 over the circular hole 26.
  • the front end of the syringe 1 1 is inserted into the other end of the rod portion 1 8 to press the rod portion 1 8.
  • an elastic member such as a spring 19 is disposed between the check valve 17 and the rod portion 18.
  • One end 41 of the spring 19 is supported on a side portion the circular flange 25 and the other end of the spring 19 is supported on a side portion of a middle-step 33 of the rod portion 1 8.
  • the rod portion 1 8 pushed forward by the syringe 1 1 is biased rearward by the spring 19.
  • the rod portion 18 is pushed forward, thereby opening the cut-away portion 28 of the check valve so that the blood flows in.
  • the biasing force applied to the syringe 1 1 is released, the rod portion 18 is pushed rearward by the biasing force of the spring, thereby closing the cutaway portion 28 of the check valve 1 8.
  • the cap portion 20 is fitted in the rear portion 14 of the body 15 so as to prevent the check valve 1 7, the rod portion 1 8 and the spring 19 from being removed away.
  • the cap portion 20 is provided with a hollow portion 36.
  • the front end of the cap portion 20 is fitted in the rear portion 1 4 of the body 1 5.
  • the cap portion 20 is provided at an outer portion of the front end with a hook step 23 coupled to a hook groove formed on an inner circumference of the rear portion 14.
  • a second hook step 38 hooked on a side portion of the rear end of the body 1 5. Accordingly, the cap portion 20 is integrally coupled to the rear end of the body 15, thereby fixing the check valve 17, the spring 19, and the rod portion 1 8 in the body 15.
  • the syringe 1 1 is mounted on the rear end of the cap portion 20 so as to store the blood flowing out through the cap portion 20.
  • the guide wire insertion device is first assembled. That is, the check valve 1 7, the spring 1 9 and the rod portion 1 8 are in this order inserted in the hollow portion of the body 1 5, after which the cap portion 20 is mounted on the body 15. Then, the .syringe 1 1 is inserted through the hollow portion 36 of the cap portion 20. At this point, since the piston 39 of the syringe 1 1 is in a state where it is pulled rearward, the inner space of the syringe 1 1 has pressure lower than the atmosphere pressure.
  • the administrator inserts the guide wire insertion device into the human body 44 so that the needle 1 6 is advanced into the blood vessel.
  • the administrator can object the blood flowing in the syringe 1 1 , thereby identifying that the needle 1 6 can exactly inserted into the blood vessel.
  • the syringe 1 1 is separated from the needle portion 1 0.
  • the rod portion 1 8 is biased rearward by the elastic force of the spring 1 9.
  • the front end 31 of the rod portion 1 8 can be removed from the cut-away portion 28. Therefore, the cut-away portion is closed to prevent the blood from being gush out from the blood vessel.
  • the guide wire can be inserted into a desired location of the blood vessel.
  • the guide wire insertion device is removed from the human body and the catheter is inserted in the human body to treat the human body.
  • the guide wire insertion device for a catheter of the present invention has an advantage that it can prevent blood from being gush out when a needle is inserted into a blood vessel.
  • the guide wire is advanced into the human body after the guide wire insertion device for the catheter is inserted into the human body, since the wire is directly inserted into the needle portion after the syringe is removed, the whole length of the device can be shortened, making it easy for the administrator to operate the device.

Abstract

L'invention concerne un appareil d'insertion de fil-guide pour cathéter, qui comprend une partie aiguille présentant une partie creuse et une extrémité avant sur laquelle une aiguille est montée. L'appareil comprend également une soupape montée dans la partie creuse de la partie aiguille pour réguler l'écoulement sanguin; une partie coiffe montée sur une extrémité arrière de la partie creuse de la partie aiguille pour y fixer la soupape; et une seringue pour absorber le sang à travers la partie aiguille, par pénétration de la soupape.
EP02738938A 2001-06-28 2002-06-20 Appareil d'insertion de fil-guide pour catheter Withdrawn EP1409062A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2001-0037403A KR100452754B1 (ko) 2001-06-28 2001-06-28 카테터용 가이드 와이어 삽입장치
KR2001037403 2001-06-28
PCT/KR2002/001173 WO2003002182A1 (fr) 2001-06-28 2002-06-20 Appareil d'insertion de fil-guide pour catheter

Publications (2)

Publication Number Publication Date
EP1409062A1 true EP1409062A1 (fr) 2004-04-21
EP1409062A4 EP1409062A4 (fr) 2006-12-27

Family

ID=19711442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02738938A Withdrawn EP1409062A4 (fr) 2001-06-28 2002-06-20 Appareil d'insertion de fil-guide pour catheter

Country Status (6)

Country Link
US (1) US20040143219A1 (fr)
EP (1) EP1409062A4 (fr)
JP (1) JP2004530517A (fr)
KR (1) KR100452754B1 (fr)
CN (1) CN1228104C (fr)
WO (1) WO2003002182A1 (fr)

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ES2756324T3 (es) * 2008-03-14 2020-04-27 Medical Components Inc Vaina introductora desgarrable con válvula de hemostasia
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Also Published As

Publication number Publication date
CN1228104C (zh) 2005-11-23
KR20030001073A (ko) 2003-01-06
US20040143219A1 (en) 2004-07-22
EP1409062A4 (fr) 2006-12-27
WO2003002182A1 (fr) 2003-01-09
KR100452754B1 (ko) 2004-10-12
CN1522165A (zh) 2004-08-18
JP2004530517A (ja) 2004-10-07

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